I bought this solar charger to keep my boat battery charged during non-use. I built a small aluminum frame and mounted the charger on my boat lift in easy reach after docking. The charger has worked great; quick charge; and the battery monitor is handy to keep the battery from being overcharged and to check on charging levels.

I was able to move this between my 3 boats for charging but primary will be fishing boat with 2 deep cycle, 1 starter. Gone a week at a time and dock is 250' long. Liking it, no idea on how it will survive the elements.